A5079878924- Insect-Plant Interactions and Control
- Plant Parasitism and Resistance
- Plant Virus Research Studies
- Plant and animal studies
- Insect Pest Control Strategies
- Insect Resistance and Genetics
- Insect symbiosis and bacterial influences
- Agriculture, Plant Science, Crop Management
- Plant-Microbe Interactions and Immunity
- Entomopathogenic Microorganisms in Pest Control
- Nematode management and characterization studies
- Plant Disease Resistance and Genetics
- Powdery Mildew Fungal Diseases
- Insect and Pesticide Research
- CRISPR and Genetic Engineering
- Insect behavior and control techniques
- Forest Insect Ecology and Management
- Ecology and Vegetation Dynamics Studies
- Plant Stress Responses and Tolerance
- Agriculture and Biological Studies
- Phytoplasmas and Hemiptera pathogens
- Genetics and Plant Breeding
- Nitrogen and Sulfur Effects on Brassica
- Plant responses to elevated CO2
- Allelopathy and phytotoxic interactions
KeyGene (Netherlands)
2018-2022
Utrecht University
2015-2019
Wageningen University & Research
2008-2018
Research International (United States)
2010
Centre for BioSystems Genomics
2007-2009
Institute of Entomology
2008
Summary Plants are exposed to combinations of various biotic and abiotic stresses, but stress responses usually investigated for single stresses only. Here, we the genetic architecture underlying plant 11 several their by phenotyping 350 Arabidopsis thaliana accessions. A set 214 000 nucleotide polymorphisms ( SNP s) was screened marker‐trait associations in genome‐wide association GWA ) analyses using tailored multi‐trait mixed models. Stress that share phytohormonal signaling pathways also...
Abstract Induction of plant defences by early season herbivores can mediate interspecific herbivore competition. We have investigated plant‐mediated competition between three herbivorous insects through studies at different levels biological integration. addressed (i) gene expression; (ii) insect behaviour and performance under laboratory conditions; (iii) population dynamics field conditions. studied the expression genes encoding a trypsin inhibitor that are involved in glucosinolate...
Summary 1. Plants face threats from a variety of herbivorous insects and can use induced responses to defend themselves against these attackers. Induced are mediated by signal transduction involving phytohormones, such as jasmonic acid (JA) salicylic (SA). Cross‐talk between pathways triggered attackers with contrasting feeding styles allows plants fine‐tune defences. A central question in this emerging field is understand how single interfere other attackers, especially integratively...
Summary Upon herbivore attack, plants activate an indirect defense, that is, the release of a complex mixture volatiles attract natural enemies herbivore. When are simultaneously exposed to two species belonging different feeding guilds, one may interfere with plant defense induced by other However, little is understood about mechanisms underlying such interference. Here, we address effect herbivory phloem‐feeding whitefly Bemisia tabaci on Arabidopsis thaliana Plutella xylostella...
Plants can recruit parasitic wasps in response to egg deposition by herbivorous insects–a sophisticated indirect plant defense mechanism. Oviposition the Large Cabbage White butterfly Pieris brassicae on Brussels sprout plants induces phytochemical changes that arrest parasitoid Trichogramma . Here, we report identification of an elicitor such oviposition-induced response. Eliciting activity was present accessory gland secretions released mated female butterflies during deposition. In...
Summary 1. Herbivore‐induced plant volatiles (HIPVs) play an important role in host location of parasitoid wasps and may benefit the by top–down control its herbivorous attackers. Although many studies have shown that accessions plants differ attractiveness to under controlled laboratory studies, few confirmed most attractive also sustain highest parasitism rates field. Here, we tested whether in‐flight preference parasitoids for HIPVs from cultivars Brassica oleracea reliably predicts...
To study whether natural variation in Arabidopsis thaliana could be used to dissect the genetic basis of responses herbivory terms induced volatile emissions, nine accessions were characterized upon by biting-chewing Pieris rapae caterpillars or after treatment with phytohormone jasmonic acid (JA). Analysis 73 compounds headspace showed quantitative differences emission rates several individual among accessions. Moreover, JA was reflected behaviour parasitoid Diadegma semiclausum when they...
Transcriptional profiling after herbivore attack reveals, at the molecular level, how plants respond to this type of biotic stress. Comparing herbivore-induced transcriptional responses with different phenotypes provides insight into plant defense mechanisms. Here, we compare global gene expression patterns induced by Pieris rapae caterpillar in two white cabbage (Brassica oleracea var. capitata) cultivars. The cultivars are shown differ their level direct against feeding. Because Brassica...
1. Arthropod communities are structured by complex interactions between bottom-up (resource-based) and top-down (natural enemy-based) forces. Their relative importance in shaping arthropod communities, however, continues to be under debate. Bottom-up forces can affected intraspecific plant variation, for example differences concentrations of secondary metabolites that affect herbivore abundance through quality (bottom-up) or attract natural enemies these herbivores (top-down). 2. Our...
Evolutionary theory of plant defences against herbivores predicts a trade-off between direct (anti-herbivore traits) and indirect (attraction carnivores) when carnivore fitness is reduced. Such expected in species that kill herbivore eggs by exhibiting hypersensitive response (HR)-like necrosis, which should then negatively affect carnivores. We used the black mustard (Brassica nigra) to investigate how this potentially lethal trait affects preferences and/or performances specialist cabbage...
Foraging success of predators profoundly depends on reliable and detectable cues indicating the presence their often inconspicuous prey. Carnivorous insects rely chemical to optimize foraging efficiency. Hyperparasitoids that lay eggs in larvae or pupae parasitic wasps may find parasitoid hosts developing different herbivores. They can use herbivore-induced plant volatiles (HIPVs) locate parasitized caterpillars. Because herbivore species induce HIPV emission from plants, hyperparasitoids...
Intraspecific variation in resistance or susceptibility to herbivorous insects has been widely studied through bioassays. However, few studies have combined this with a full transcriptomic analysis. Here, we take such an approach study the interaction between aphid Brevicoryne brassicae and four white cabbage (Brassica oleracea var. capitata) cultivars. Both under glasshouse field conditions, two of cultivars clearly supported faster population development than other two, indicating that was...
Abstract Plants show phenotypic changes when challenged with herbivorous insects. The mechanisms underlying these include the activation of transcriptional responses, which are dependent on attacking insect. Most transcriptomic studies crucifer–insect interactions have focused model plant Arabidopsis thaliana, a species that faces low herbivore pressure in nature. Here, we study responses plants from wild black mustard (Brassica nigra) population to herbivores different feeding guilds using...
Aphids are insects that cause direct damage to crops by the removal of phloem sap, but more importantly they spread devastating viruses. use their sophisticated mouthpart (i.e. stylet) feed from sieve elements host plant. To identify genes affect plant resistance aphids, we previously screened an Arabidopsis thaliana activation tag mutant collection. In such mutants, tagged overexpressed a strong 35S enhancer adjacent natural promoter, resulting in dominant gain-of-function phenotype. We...
Abstract Background Phloem-feeding insects are among the most devastating pests worldwide. They not only cause damage by feeding from phloem, thereby depleting plant photo-assimilates, but also vectoring viruses. Until now, main way to prevent such problems is frequent use of insecticides. Applying resistant varieties would be a more environmental friendly and sustainable solution. For this, sources need identified first. Up now there were no methods suitable for high throughput phenotyping...
Intraspecific differences in plant defence traits are often correlated with variation transcriptional profiles and can affect the composition of herbivore communities on field-grown plants. However, most studies profiling plant–herbivore interactions have been carried out under controlled conditions laboratory or greenhouse only a few examine intraspecific variation. Here, community between two Brassica oleracea cultivars grown field is addressed. Early season, no were found for naturally...
Abstract The cabbage whitefly [ Aleyrodes proletella L. (Hemiptera: Aleyrodidae)] is becoming a serious pest in Brassica oleracea (Brassicaceae) crops. However, almost nothing known about the interaction of this insect with its host plants. Previous studies have shown differences natural occurrence adults, eggs, and nymphs on closely related B. cultivars Christmas Drumhead Riviera grown field. In study, we aimed to identify nature these gain insight into resistance mechanisms against A....
The whitefly Bemisia tabaci is a serious threat in tomato cultivation worldwide as all varieties grown today are highly susceptible to this devastating herbivorous insect. Many accessions of the wild relative Solanum pennellii show high resistance towards B. tabaci. A mapping approach was used elucidate genetic background whitefly-resistance related traits and associated biochemical species. Minor quantitative trait loci (QTLs) for adult survival (AS) oviposition rate (OR) were identified...
Plants are commonly attacked by multiple herbivorous species. Yet, little is known about transcriptional patterns underlying plant responses to insect attackers feeding simultaneously. Here, we assessed transcriptomic of Arabidopsis thaliana plants simultaneous Plutella xylostella caterpillars and Brevicoryne brassicae aphids in comparison infested P. alone, using microarray analysis. We particularly investigated how aphid interferes with the response whether this interference dependent on...
Resistance (R) genes usually compete in a coevolutionary arms race with reciprocal effectors to confer strain-specific resistance pathogens or herbivorous insects. Here, we investigate the specificity of SLI1, recently identified R gene Arabidopsis that encodes small heat shock-like protein involved Myzus persicae aphids. In panel several aphid and whitefly species, SLI1 compromised reproductive rates three species: tobacco M. nicotianae, cabbage Brevicoryne brassicae Aleyrodes proletella....